content: /**
   * Copyright (c) 2016-present, RxJava Contributors.
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   * http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  package io.reactivex.interop;
  
  import static org.junit.Assert.*;
  
  import java.io.IOException;
  import java.util.List;
  import java.util.concurrent.atomic.AtomicInteger;
  
  import org.junit.*;
  import org.reactivestreams.Subscription;
  
  import hu.akarnokd.reactivestreams.extensions.RelaxedSubscriber;
  import io.reactivex.common.*;
  import io.reactivex.common.exceptions.*;
  import io.reactivex.common.functions.*;
  import io.reactivex.common.internal.utils.ExceptionHelper;
  import io.reactivex.observable.*;
  import io.reactivex.observable.subjects.PublishSubject;
  
  public class ExceptionsTest {
  
      @Ignore("Exceptions is not an enum")
      @Test
      public void constructorShouldBePrivate() {
          TestCommonHelper.checkUtilityClass(ExceptionHelper.class);
      }
  
      @Test
      public void testOnErrorNotImplementedIsThrown() {
          List<Throwable> errors = TestCommonHelper.trackPluginErrors();
          try {
              Observable.just(1, 2, 3).subscribe(new Consumer<Integer>() {
  
                  @Override
                  public void accept(Integer t1) {
                      throw new RuntimeException("hello");
                  }
  
              });
  
              TestCommonHelper.assertError(errors, 0, RuntimeException.class, "hello");
          } finally {
              RxJavaCommonPlugins.reset();
          }
      }
  
      /**
       * https://github.com/ReactiveX/RxJava/issues/3885
       */
      @Ignore("v2 components should not throw")
      @Test(expected = RuntimeException.class)
      public void testOnCompletedExceptionIsThrown() {
          Observable.empty()
              .subscribe(new Observer<Object>() {
                  @Override
                  public void onComplete() {
                      throw new RuntimeException();
                  }
  
                  @Override
                  public void onError(Throwable e) {
                  }
  
                  @Override
                  public void onNext(Object o) {
                  }
  
                  @Override
                  public void onSubscribe(Disposable d) {
  
                  }
              });
      }
  
      @Test
      public void testStackOverflowWouldOccur() {
          final PublishSubject<Integer> a = PublishSubject.create();
          final PublishSubject<Integer> b = PublishSubject.create();
          final int MAX_STACK_DEPTH = 800;
          final AtomicInteger depth = new AtomicInteger();
  
          a.subscribe(new Observer<Integer>() {
  
              @Override
              public void onSubscribe(Disposable d) {
  
              }
  
              @Override
              public void onComplete() {
  
              }
  
              @Override
              public void onError(Throwable e) {
                  e.printStackTrace();
              }
  
              @Override
              public void onNext(Integer n) {
                  b.onNext(n + 1);
              }
          });
          b.subscribe(new Observer<Integer>() {
  
              @Override
              public void onSubscribe(Disposable d) {
                  // TODO Auto-generated method stub
  
              }
  
              @Override
              public void onComplete() {
  
              }
  
              @Override
              public void onError(Throwable e) {
                  e.printStackTrace();
              }
  
              @Override
              public void onNext(Integer n) {
                  if (depth.get() < MAX_STACK_DEPTH) {
                      depth.set(Thread.currentThread().getStackTrace().length);
                      a.onNext(n + 1);
                  }
              }
          });
          a.onNext(1);
          assertTrue(depth.get() >= MAX_STACK_DEPTH);
      }
  
      @Test(expected = StackOverflowError.class)
      public void testStackOverflowErrorIsThrown() {
          Observable.just(1).subscribe(new Observer<Integer>() {
  
              @Override
              public void onSubscribe(Disposable d) {
  
              }
  
              @Override
              public void onComplete() {
  
              }
  
              @Override
              public void onError(Throwable e) {
                  e.printStackTrace();
              }
  
              @Override
              public void onNext(Integer t) {
                  throw new StackOverflowError();
              }
  
          });
      }
  
      @Test(expected = ThreadDeath.class)
      public void testThreadDeathIsThrown() {
          Observable.just(1).subscribe(new Observer<Integer>() {
  
              @Override
              public void onSubscribe(Disposable d) {
  
              }
  
              @Override
              public void onComplete() {
  
              }
  
              @Override
              public void onError(Throwable e) {
                  e.printStackTrace();
              }
  
              @Override
              public void onNext(Integer t) {
                  throw new ThreadDeath();
              }
  
          });
      }
  
      /**
       * https://github.com/ReactiveX/RxJava/issues/969
       */
      @Ignore("v2 components should not throw")
      @Test
      public void testOnErrorExceptionIsThrown() {
          try {
              Observable.error(new IllegalArgumentException("original exception")).subscribe(new Observer<Object>() {
  
                  @Override
                  public void onSubscribe(Disposable d) {
  
                  }
  
                  @Override
                  public void onComplete() {
  
                  }
  
                  @Override
                  public void onError(Throwable e) {
                      throw new IllegalStateException("This should be thrown");
                  }
  
                  @Override
                  public void onNext(Object o) {
  
                  }
              });
              fail("expecting an exception to be thrown");
          } catch (RuntimeException t) {
              CompositeException cause = (CompositeException) t.getCause();
              assertTrue(cause.getExceptions().get(0) instanceof IllegalArgumentException);
              assertTrue(cause.getExceptions().get(1) instanceof IllegalStateException);
          }
      }
  
      /**
       * https://github.com/ReactiveX/RxJava/issues/2998
       * @throws Exception on arbitrary errors
       */
      @Ignore("v2 components should not throw")
      @Test(expected = RuntimeException.class)
      public void testOnErrorExceptionIsThrownFromGroupBy() throws Exception {
          Observable
              .just(1)
              .groupBy(new Function<Integer, Integer>() {
                  @Override
                  public Integer apply(Integer integer) {
                      throw new RuntimeException();
                  }
              })
              .subscribe(new Observer<GroupedObservable<Integer, Integer>>() {
  
                  @Override
                  public void onSubscribe(Disposable d) {
  
                  }
  
                  @Override
                  public void onComplete() {
  
                  }
  
                  @Override
                  public void onError(Throwable e) {
                      throw new RuntimeException();
                  }
  
                  @Override
                  public void onNext(GroupedObservable<Integer, Integer> integerIntegerGroupedObservable) {
  
                  }
              });
      }
  
      /**
       * https://github.com/ReactiveX/RxJava/issues/2998
       * @throws Exception on arbitrary errors
       */
      @Ignore("v2 components should not throw")
      @Test(expected = RuntimeException.class)
      public void testOnErrorExceptionIsThrownFromOnNext() throws Exception {
          Observable
              .just(1)
              .doOnNext(new Consumer<Integer>() {
                  @Override
                  public void accept(Integer integer) {
                      throw new RuntimeException();
                  }
              })
              .subscribe(new Observer<Integer>() {
  
                  @Override
                  public void onSubscribe(Disposable d) {
  
                  }
  
                  @Override
                  public void onComplete() {
  
                  }
  
                  @Override
                  public void onError(Throwable e) {
                      throw new RuntimeException();
                  }
  
                  @Override
                  public void onNext(Integer integer) {
  
                  }
              });
      }
  
      @Ignore("v2 components should not throw")
      @Test(expected = RuntimeException.class)
      public void testOnErrorExceptionIsThrownFromSubscribe() {
          Observable.unsafeCreate(new ObservableSource<Integer>() {
                                @Override
                                public void subscribe(Observer<? super Integer> s1) {
                                    Observable.unsafeCreate(new ObservableSource<Integer>() {
                                        @Override
                                        public void subscribe(Observer<? super Integer> s2) {
                                            throw new IllegalArgumentException("original exception");
                                        }
                                    }).subscribe(s1);
                                }
                            }
          ).subscribe(new OnErrorFailedSubscriber());
      }
  
      @Ignore("v2 components should not throw")
      @Test(expected = RuntimeException.class)
      public void testOnErrorExceptionIsThrownFromUnsafeSubscribe() {
          Observable.unsafeCreate(new ObservableSource<Integer>() {
                                @Override
                                public void subscribe(Observer<? super Integer> s1) {
                                    Observable.unsafeCreate(new ObservableSource<Integer>() {
                                        @Override
                                        public void subscribe(Observer<? super Integer> s2) {
                                            throw new IllegalArgumentException("original exception");
                                        }
                                    }).subscribe(s1);
                                }
                            }
          ).subscribe(new OnErrorFailedSubscriber());
      }
  
      @Ignore("v2 components should not throw")
      @Test(expected = RuntimeException.class)
      public void testOnErrorExceptionIsThrownFromSingleDoOnSuccess() throws Exception {
          Single.just(1)
                  .doOnSuccess(new Consumer<Integer>() {
                      @Override
                      public void accept(Integer integer) {
                          throw new RuntimeException();
                      }
                  })
                  .toObservable().subscribe(new OnErrorFailedSubscriber());
      }
  
      @Ignore("v2 components should not throw")
      @Test(expected = RuntimeException.class)
      public void testOnErrorExceptionIsThrownFromSingleSubscribe() {
          Single.unsafeCreate(new SingleSource<Integer>() {
                            @Override
                            public void subscribe(SingleObserver<? super Integer> s1) {
                                Single.unsafeCreate(new SingleSource<Integer>() {
                                    @Override
                                    public void subscribe(SingleObserver<? super Integer> s2) {
                                        throw new IllegalArgumentException("original exception");
                                    }
                                }).subscribe(s1);
                            }
                        }
          ).toObservable().subscribe(new OnErrorFailedSubscriber());
      }
  
      @Ignore("v2 components should not throw")
      @Test(expected = RuntimeException.class)
      public void testOnErrorExceptionIsThrownFromSingleUnsafeSubscribe() {
          Single.unsafeCreate(new SingleSource<Integer>() {
                            @Override
                            public void subscribe(final SingleObserver<? super Integer> s1) {
                                RxJava3Interop.toFlowable(Single.unsafeCreate(new SingleSource<Integer>() {
                                    @Override
                                    public void subscribe(SingleObserver<? super Integer> s2) {
                                        throw new IllegalArgumentException("original exception");
                                    }
                                })).subscribe(new RelaxedSubscriber<Integer>() {
  
                                    @Override
                                    public void onSubscribe(Subscription s) {
                                        s.request(Long.MAX_VALUE);
                                    }
  
                                    @Override
                                    public void onComplete() {
                                    }
  
                                    @Override
                                    public void onError(Throwable e) {
                                        s1.onError(e);
                                    }
  
                                    @Override
                                    public void onNext(Integer v) {
                                        s1.onSuccess(v);
                                    }
  
                                });
                            }
                        }
          ).toObservable().subscribe(new OnErrorFailedSubscriber());
      }
  
      private class OnErrorFailedSubscriber implements Observer<Integer> {
  
          @Override
          public void onSubscribe(Disposable d) {
  
          }
  
          @Override
          public void onComplete() {
          }
  
          @Override
          public void onError(Throwable e) {
              throw new RuntimeException();
          }
  
          @Override
          public void onNext(Integer value) {
          }
      }
  
      @Test
      public void utilityClass() {
          TestCommonHelper.checkUtilityClass(Exceptions.class);
      }
  
      @Test
      public void manualThrowIfFatal() {
  
          try {
              Exceptions.throwIfFatal(new ThreadDeath());
              fail("Didn't throw fatal exception");
          } catch (ThreadDeath ex) {
              // expected
          }
  
          try {
              Exceptions.throwIfFatal(new LinkageError());
              fail("Didn't throw fatal error");
          } catch (LinkageError ex) {
              // expected
          }
  
          try {
              ExceptionHelper.wrapOrThrow(new LinkageError());
              fail("Didn't propagate Error");
          } catch (LinkageError ex) {
              // expected
          }
      }
  
      @Test
      public void manualPropagate() {
  
          try {
              Exceptions.propagate(new InternalError());
              fail("Didn't throw exception");
          } catch (InternalError ex) {
              // expected
          }
  
          try {
              throw Exceptions.propagate(new IllegalArgumentException());
          } catch (IllegalArgumentException ex) {
              // expected
          }
  
          try {
              throw ExceptionHelper.wrapOrThrow(new IOException());
          } catch (RuntimeException ex) {
              if (!(ex.getCause() instanceof IOException)) {
                  fail(ex.toString() + ": should have thrown RuntimeException(IOException)");
              }
          }
      }
  
  }
  